Inventors:
Jon B. Jansma - Pepper Pike OH, US
Colleen M. Griffith - Broomfield CO, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
H01K001/76, H01K001/28, H01J061/40
Abstract:
A fluorescent lamp with an ultraviolet reflecting barrier layer between the glass envelope and the phosphor layer(s). The barrier layer is a blend of gamma alumina, alpha alumina and theta alumina, such as 5–80 weight percent gamma alumina, 5–80 weight percent alpha alumina, and 5–80 weight percent theta alumina.